Browscap\Writer\CsvWriter::fileStart PHP Method

    public function fileStart()
    {
        return $this;
    }

 /**
  * tests rendering the start of the file
  *
  * @group writer
  * @group sourcetest
  */
 public function testFileStart()
 {
     self::assertSame($this->object, $this->object->fileStart());
     self::assertSame('', file_get_contents($this->file));
 }